对比哥伦比亚安第斯山脉加拿大林莺(cardelina canadensis)越冬栖息地的遮荫咖啡农业和原生森林的适宜性

IF 4.6 Q2 MATERIALS SCIENCE, BIOMATERIALS
Ana M. González, Scott Wilson, Nicholas J. Bayly, K. Hobson
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引用次数: 12

摘要

在新热带地区,咖啡生产大规模地发生在地球上一些生物多样性最丰富的地区:热带山区。使用遮荫树的咖啡生产系统被认为对生物多样性的影响比替代阳光咖啡要小。迄今为止,大多数关于遮荫咖啡种植园价值的证据都没有考虑到与它们所取代的原始森林相比,这种栖息地的相对质量。我们通过比较两种栖息地之间捕获个体的可能性、身体状况的季节性变化以及年存活率的变化,确定了遮荫咖啡和森林作为加拿大林莺冬季栖息地的适宜性。我们还确定了2015-2016年强烈的El Niño事件对生存率的影响。相对而言,雄性比雌性更容易在森林中被捕获,这种可能性在干旱年份增加。使用森林和咖啡的个体在冬季的身体状况变化和明显的年存活率相似。然而,在El Niño年期间,这两个栖息地的条件和存活率都有所下降。携带无线电标签或地理定位器的人的表观存活率也较低。我们的研究结果表明,具有高树冠覆盖率和高度的遮荫咖啡在身体状况和生存方面对森林有类似的好处。景观保护方法,促进结构复杂的遮荫咖啡和森林的多样化基质,可能最能确保加拿大林莺等新热带候鸟的长期生存。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Contrasting the suitability of shade coffee agriculture and native forest as overwinter habitat for Canada Warbler (Cardellina canadensis) in the Colombian Andes
ABSTRACT In the Neotropics, coffee production occurs on a large scale in some of the planet′s most biodiverse regions: tropical mountains. Coffee production systems involving shade trees are considered to have a lower impact on biodiversity than alternative sun coffee. To date, the majority of evidence for the value of shade coffee plantations has not taken into account the relative quality of this habitat compared to the native forests they replaced. We determined the suitability of shade coffee and forest as winter habitat for Canada Warbler (Cardellina canadensis) by comparing variation in the likelihood of capturing individuals, seasonal changes in body condition, and estimates of annual survival between the 2 habitats. We also determined the effect of the strong 2015–2016 El Niño event on survival. Males were relatively more likely to be captured in forest than females and this likelihood increased during drier years. Body condition change over the winter and apparent annual survival were similar for individuals that used forest and coffee. However, condition and survival decreased in both habitats during the El Niño year. Apparent survival was also lower for individuals carrying a radiotag or geolocator. Our findings suggest that shade coffee with high canopy cover and height offers similar benefits to forest in terms of body condition and survival. Landscape conservation approaches, promoting diverse matrices of structurally complex shade coffee and forest might best ensure long-term survival in Neotropical migrants like Canada Warbler.
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来源期刊
ACS Applied Bio Materials
ACS Applied Bio Materials Chemistry-Chemistry (all)
CiteScore
9.40
自引率
2.10%
发文量
464
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